This site cites this specific source directly for its Lion's Mane ingredient claim — worth checking what it actually covers.
NCCIH, the National Center for Complementary and Integrative Health, is a government research body — worth reading its Lion's Mane page as background on the mushroom's general research status, not a trial of this specific capsule.
This site separately cites Lion's Mane for nerve-growth-factor and memory research in small trials of older adults — worth checking this NCCIH source directly for its own wording on that specific research.